A chamber is surely on the cards Rohit.. waiting for the running in to be over. counting on Atul.

@yamdoot: Amazing rebuild there man! I am also getting tempted to get myself one, but I lack the technical know-how. If&when I do decide to get myself one of these for some street fun, I wanted to know which one would be better. This is what I know about the variants, please correct me&let me know their pros&cons:
1. RX100
2. RXG
3. RXZ 4 speed (does this have a tacho?)
4. RXZ 5 speed with front disc
5. RX135 4 speed
6. RX135 5 speed white dials, catcon silencer (was this 14bhp?)

It would be great if anyone could provide me the specs for these models.

I think the RXZ 5 speed with front disc looks great, but would the body panels/mechanical spares be available or not?

What about the RX135-is the most powerful of the lot?

Which has the best initial accelaration-RX100? Is it the best bet as many say?

Also, porting, chamber, sleeving, oversize etc.are all Greek&Latin to me, I need to know from you guys whether I can keep this kind of bike with me or not-honest opinions please. I am not an Engineer. I already have 2 bikes for daily use&long rides, so if I do get it, this would be used less, for fun in city.

Please let me know what kind of bike I should look for, &what are the areas I should look into, with what kind of budget also.

Also, I have heard that RTO is not registering 2 strokers anymore. Is this true? Would it be difficult to get the ownership transferred onto my name if I do buy one?

Awaiting your inputs,
Thanks.

@yamdoot: Amazing rebuild there man! I am also getting tempted to get myself one, but I lack the technical know-how. If&when I do decide to get myself one of these for some street fun, I wanted to know which one would be better. This is what I know about the variants, please correct me&let me know their pros&cons:


1. RX100 - 10.8 bhp, 4 speed, top speed 99 kmph


2. RXG - 12 bhp, severely restricted exhaust port for better mileage, messed up electricals, not that great a performer ( 135cc, top speed 105)


3. RXZ 4 speed (does this have a tacho?) - Yes, and its 12.5 bhp, un restricted as compared to the RXG. Much easier to find parts for this bike, especially the body kit etc.


4. RXZ 5 speed with front disc - The rare machine - 14.5 bhp, 5 gears ( though final drive ratio is the same, but having closely spaced gears means you can play around with sprocketing to get the sweet spot ).
- Its been three months and i am still trying to source 3-4 parts for it, like the front fairing, the engine cowling, the front brake master cylinder.
- Took me about 2 months to get the genuine front speedo worm for it.
- The engine block is another story altogether, none or very few available.



5. RX135 4 speed - The most common RX, easily available second hand, though cylinders are again hard to get. This shares the engine block with the RXZ 5 speed.


6. RX135 5 speed white dials, catcon silencer (was this 14bhp?) - The later 2003 models were not, they were 12.5 bhp blocks running a 5 speed engine. Called tiger or something. Though highly fuel efficient!

It would be great if anyone could provide me the specs for these models.

I think the RXZ 5 speed with front disc looks great, but would the body panels/mechanical spares be available or not?

- Panels and spares is a slight problem.

What about the RX135-is the most powerful of the lot?

- The 2001-2002 RX135 5 speed, because it was a 14.5 bhp machine, and lighter than the RXZ.

Which has the best initial accelaration-RX100? Is it the best bet as many say?

- The RX100 has good acceleration, but not the best initial IMO. ( at the risk of being flamed by the dozens of RX100 owners here). That has to be the 4 speed, 12.5 bhp RX135.

Also, porting, chamber, sleeving, oversize etc.are all Greek&Latin to me, I need to know from you guys whether I can keep this kind of bike with me or not-honest opinions please. I am not an Engineer. I already have 2 bikes for daily use&long rides, so if I do get it, this would be used less, for fun in city.

- Get a bike for which you can get OEM parts easily, right now RX100 and RX135 ( 4 speed and the later 5 speed models) share a lot of parts, so it will be easier to rebuild. But first concentrate on the engine parts like cylinder, crank, con-rod, piston etc. Rest everything can be sourced.

-So go with the bike, whose engine parts are easy to source.

Please let me know what kind of bike I should look for, &what are the areas I should look into, with what kind of budget also.

Also, I have heard that RTO is not registering 2 strokers anymore. Is this true? Would it be difficult to get the ownership transferred onto my name if I do buy one?

- If you have a bike which is registered in the last 15 years, then you can get it transferred, and there will be a fitness test once the R/C expires.

Awaiting your inputs,
Thanks.

Thanks a lot for your informative post JD!
If I do decide, I will stay away from the RXG&RXZ, though the Z is very tempting.
What I wanted to ask you again, was:
It seems like there were a lot of engine changes in RX135
1st was 4 speed with 12.5 bhp
then was 5 speed with 14.5 bhp 2001-2002 model
then finally it again became 12.5 bhp in 2003 with the catcon?

So, shall I target the RX135 4 speeder?
Also, what do you think of this news?
Yamaha RX100 spares to make a comeback, not the bike! - Motoroids.com
Will this apply to all the RX series or only RX100?
My friend tells me RX135 spares are available in OEM itself, can some other owners shed any light on this?

good info JD..

@sarvajit, i think the RX135 4S and even the RXZ 4S is a good bet for anyone.. RXZ body panels are not very difficult to get except for the fairing and cowl.. look for a bike which has both.. rest of the stuff is more or less common for both.. the fairing glass[acrylic],tail lamp is available too.. so not very difficult to restore a RXZ 4s..u cud add a 5speed gearbox, 5speed sticering and a gladiator front with disc to complete the look!

Thanks buddy, I'll keeo both your inputs in mind&start saving&looking out for a good bike!

Thanks a lot for your informative post JD!
If I do decide, I will stay away from the RXG&RXZ, though the Z is very tempting.
What I wanted to ask you again, was:
It seems like there were a lot of engine changes in RX135
1st was 4 speed with 12.5 bhp
then was 5 speed with 14.5 bhp 2001-2002 model
then finally it again became 12.5 bhp in 2003 with the catcon?

- yes you are right about the series.

Target a 14.5 bhp rx135 if the block is in good condition ( running maybe first or second oversize ). One oversize should ideally last atleast 30,000 kms, and you can go till 4 oversizes, more if you go with atul_astro's modding skills.

So, shall I target the RX135 4 speeder?

-An easy build to go for, again the engine block is the main issue.

Also, what do you think of this news?
Yamaha RX100 spares to make a comeback, not the bike! - Motoroids.com
Will this apply to all the RX series or only RX100?

A lot of parts are common to both RXs, so no worries there. I can get you tanks and side panels for the RX100,135, 135 5 speed etc.

My friend tells me RX135 spares are available in OEM itself, can some other owners shed any light on this?

Spares are available, and i am also trying to get my hands on some 5 speed bores from japan thru some people in singapore.. lets see.

Spot on yamdoot & jd666.

RX100 & RX135 4S are easier to source, both the bike & spares.

Though, I have not ridden a 5S, but it is widely regarded as the best performer in the RX series. However, parts difficult to find

So you decide

When how ?? you mean to say that yamaha released the 5 speed z with 4 speed blocks, its 4TL00 for 4 speed 4TL10 for 5 speed. if you have got your bike with the 4 speed bore then you are plain lucky

^^ thanks for the proof reading.. no i meant to say that the RX135 4 speed shares the block with the RXZ 4 speed.

The RXZ 5speed came with the 4TL10 block iirc. Though i have a 4TL00 block on my bike, and its original according to the owner.. confusion!!

ok, just a small update guys.. the bike was having some probs idling and having a smooth linear powerband.. tried jetting and even a PWK provided by Atul.. didnt make much difference as far as idling issues were concerned. finally handed over the bike to Atul again and he took the topend apart n diagnosed as an airleak at the inlet manifold as it has a bigger inlet with bigger reeds and a reed spacer , it developed an airleak thru the packing.. its kinda trick to properly cut a precise packing. he made the packing and torqued the manifold properly which cured the prob. .. now the bikes running much better n has a good linear power.. waiting for the running in to complete but due to time constraints its really slow.. run only 620 kms till now.. Atul promises a smoother engine and better power around 18 bhp once the run in is over.. will keep updating .

^^ leakage is a beech in 2-strokes.. I couldnt diagnose why my bike simply dint start or kept on over revving... the YEIS box was leaking...

i guess jd999 was wrong on a topic
a RX-100 will top 140 kmph easily...Which i myself have done many tymes.

^^ yeah if you have a over optimistic speedo, a stock RX100 will top 140... and its a 6, not a 9.

I have never done that on my Opel Astra 1.6, let alone my stock RX. Tell us the trick dude. May be the gear shifts?